The ACDelco Professional DuraStop Brake Master Cylinder Repair Kit contains high quality replacement components for your vehicle's braking system. This kit includes the necessary bolts, fasteners, bushings, and other hardware needed to repair your vehicle's brake master cylinder. Brakes are one area in which vehicle owners simply cannot compromise. With ACDelco Brakes, you can get the peace of mind that comes with parts that are expertly engineered, manufactured to stringent tolerances, thoroughly tested and backed by the ACDelco name. Choose from our GM Original Equipment, Professional DuraStop, Advantage, and Specialty Series to meet your performance needs and budget.